NSN 2810-00-778-7993 · NIIN 007787993 · Part number 35992M2
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney · FSC 2810 — Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components · FSG 28 — Engines, Turbines, and Components · CAGE 77445
Government record, cited
NSN 2810-00-778-7993 — this item is cataloged by the U.S. Government under National Stock Number 2810-00-778-7993. Manufacturer of record part number: 35992M2.
Also searched as2810-00-778-7993 ·
2810007787993 ·
NIIN 007787993 ·
00-778-7993 ·
FSC 2810 Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components · CAGE 77445 · 35992M2 · AS35992M2
General Characteristics Item Description: MATL COPPER ALLOY PER AMS 4630; HARDNESS PER ROCKWELL B77; ALL DIMENSIONS BASED ON FULL CIRCLE; BODY 7.283 IN. MIN AND 7.285 IN. MAX OD; FLANGE 7.4375 IN. OD; BORE 5.875 IN. DIA; COUNTERBORE 6.997 IN. DIA; 4 HOLES 0.377 IN. DIA; 4 HOLES 0.078125 IN. DIA; 3 HOLES THREADED 0.25-28NF-2 IN
2 manufacturer part numbers on file
Manufacturer of record: Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
Identification
NSN: 2810-00-778-7993
NIIN: 007787993
FSC: 2810 — Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components
FSG: 28 — Engines, Turbines, and Components
Primary part number: 35992M2
Manufacturer: Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
General Description
The Shoe,center Main Bearing,half, cataloged under National Stock Number 2810-00-778-7993, is classified within Federal Supply Class 2810 (Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
2810-00-778-7993
Primary Part Number
35992M2
Item Name
Shoe,center Main Bearing,half
FSC / FSG
2810 / 28 — Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components
Manufacturer
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
Status
ACTIVE
General Characteristics Item Description
MATL COPPER ALLOY PER AMS 4630; HARDNESS PER ROCKWELL B77; ALL DIMENSIONS BASED ON FULL CIRCLE; BODY 7.283 IN. MIN AND 7.285 IN. MAX OD; FLANGE 7.4375 IN. OD; BORE 5.875 IN. DIA; COUNTERBORE 6.997 IN. DIA; 4 HOLES 0.377 IN. DIA; 4 HOLES 0.078125 IN. DIA; 3 HOLES THREADED 0.25-28NF-2 IN
Other items in FSC 2810 — Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
2810-00-037-4718
2810-00-037-4718 · Item name not on file
2810-00-037-8300
2810-00-037-8300 · Item name not on file
2810-00-070-7830
2810-00-070-7830 · Item name not on file
2810-00-073-5562
CYLINDER AND PISTON
2810-00-075-1018
2810-00-075-1018 · Item name not on file
2810-00-076-2698
2810-00-076-2698 · Item name not on file
2810-00-076-2699
2810-00-076-2699 · Item name not on file
2810-00-792-6442
FLANGE,E,HAUST
Frequently Asked Questions
What is NSN 2810-00-778-7993?
NSN 2810-00-778-7993 is a Shoe,center Main Bearing,half, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 2810, Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components. Status: active.
What part numbers are listed for NSN 2810-00-778-7993?
NSN 2810-00-778-7993 has 2 manufacturer part numbers on file: 35992M2 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 35992M2 (Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.).
What are the specifications of 35992M2?
Key specifications for 35992M2: General Characteristics Item Description: MATL COPPER ALLOY PER AMS 4630; HARDNESS PER ROCKWELL B77; ALL DIMENSIONS BASED ON FULL CIRCLE; BODY 7.283 IN. MIN AND 7.285 IN. MAX OD; FLANGE 7.4375 IN. OD; BORE 5.875 IN. DIA; COUNTERBORE 6.997 IN. DIA; 4 HOLES 0.377 IN. DIA; 4 HOLES 0.078125 IN. DIA; 3 HOLES THREADED 0.25-28NF-2 IN; End Item Identification: ACFT ENG,RECIPROCATING. 1 specification is documented in the U.S. Government catalog.
Is NSN 2810-00-778-7993 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.